P32-EN – Subject to technical changes 04.11
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d) “T.Out”, outdoor temperature influence in lowering
mode
: Use “T.Out.MIN” to specify the outdoor tem-
perature at which the heating circuit pump is to be
switched off during lowering mode. This function is
activated and “T.Out.MIN” is set to 10°C with a hys-
teresis of 2 K at the factory.
An example for active switch-off condition
:
Heating circuit 1 is in lowering mode, and the
heating pump switches off if the current outdoor
temperature exceeds 12°C. It is turned on again
when the outside temperature drops below 10°C.
Depending on the insulation of the house,
you may want to set “T.Out.MIN”:
- poor insulation: up to 15°C
- good insulation: less than 10°C.
e)
Finally, in the last line, set how you want the con-
troller to control the mixer in the heating circuit when
the heating circuit pump is switched off. Options:
Mixer set to “unchanged”, “control”, “closed”
(factory setting) or “open”.
“Functions” Menu Overview
4. “SWITCH-OFF COND.:” settings
You can determine when the heating circuit pump is to
be switched off in the switch-off condition menu (figure
on right). In order to set the switch-off conditions, the
controller must be in the “Technician” operating mode.
a) “T.Room”, room influence
: The first switch-off con-
dition of the heating circuit (room temperature is
higher than target room temperature) is set to “no”
at the factory, because no room sensor is provided
for this system.
b) “T.Pre”, flow influence
: In the second switch-off
condition, the controller switches off the heating
circuit when the flow target temperature determined
using the heating curve is lower than the set
minimum flow temperature “T.Pre.MIN”. This func-
tion is activated and set with a hysteresis of 2 K at
the factory. This means that the heating circuit is
switched on again when the target flow (“pre-run”)
temperature is higher than the set minimum flow
(“pre-run”) temperature “T.Pre.MIN” plus 2K.
Example for the activated switch-off condition
:
Heating circuit 1 is within a time window with
“T.Room.NORMAL” = 20°C and “T.Pre.MIN” = 20°C.
The heating pump is switched off if the flow temper-
ature (determined with the outside temperature and
the heating curve) is lower than 20°C. It is switched
on again starting at a target flow temperature of
22°C.
c) “T.Out”, outdoor temperature influence in normal
mode (summer/winter switch)
: You can use
“T.Out.MAX” to set the outdoor temperature at
which the heating circuit is switched off. The
average outdoor temperature is calculated over
30 minutes. The function is activated in the factory
and “T.Out.MAX” is 17°C. This means the heating
circuit is switched off when the outside temperature
is greater than 17°C + 2 K = 19°C. Hysteresis was
set to 2 Kelvin at the factory, which means the
heating circuit will not switch back on unless
the median outside temperature is less than
“T.Out.MAX” (= 17°C).
An example for the activated switch-off condition
:
Heating circuit 1 is within a time window with
“T.Room.NORMAL” = 20°C, the heating pump is
switched off if the median outside temperature is
19.1°C or more. It is turned back on when the
median outside temperature falls to 17°C.
Adapt “T.Out.MAX” to meet the insulation of
the house.
Menu, plain text
Factory
Own
setting
Setting
1 2 3 4 5 6 7 8 9 10 11 12 13 14
SWITCH-OFF COND.
HEAT CIR.1
if T.Room
ACT > NORMAL ? no
No
Hysteresis: 1.0 K
1.0
if T.Pre.
NOM < MIN ? yes
Yes
Hysteresis: 2.0 K
2.0
if T.Out
AVGoff > MAX ? yes
Yes
T.Out.MAX: 19°C
19
Hysteresis: 2.0 K
2.0
if lowering operat.
and T.Out
ACT > MIN ? yes
Yes
T.Out.MIN: 10°C
10
Hysteresis: 2.0 K
2.0
if Heating Circ. OFF
Mixer: close
closed
Menu overview switch-off conditions heating circuit
